Help with Sequential Numbering in Screenplay Format

I’ve got a technical question about the auto-numbering of scenes. At one point I wanted my scenes to be numbered (in the side margins) and set this up but I can’t for the life of me remember how I did it so I can undo it! Any help would be greatly appreciated.

P.S. My sequential numbering is set to “none”. And I never set up the (etc.)

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“In the side margins” meaning what, exactly?